energy and physical activity

Question 1

ATP/PC : adenosine triphosphate phosphocreatine

Answer 1

Fuel for ATP production
- creatine phosphate
Duration
- 95-100% maximum effort
- lasts 10-12 seconds
Cause of fatigue
- creatine phosphate is exhausted after time
By-products
- no waste
Process of recovery
- rebuild ATP
Rate of recovery
- 30s-2min

Question 2

Lactic Acid

Answer 2

Fuel for ATP production
- carbohydrates broken down into muscle glycogen
Duration
- 20-25% maximum effort
- lasts 30 seconds
- depends on intensity (30s-3min)
Cause of fatigue
- lactic acid builds up in the muscles
By-products
- lactic acid
Process of recovery
- rebuild ATP
Rate of recovery
- 20min-2hrs

Question 3

Aerobic

Answer 3

Fuel for ATP production
- carbohydrates
- oxygen
- fat and protein (limited use)
Duration
- unlimited at low intensity
Cause of fatigue
- fuel has been fully used
By-products
- carbon dioxide and water
Process of recovery
- fuel replacement
Rate of recovery
- up to 24hrs

Question 4

Energy production on a graph

Answer 4

ATP/PC
- 0 to high to 0 at 10sec
Lactic acid
- 0 to medium to 0 at 1min
Aerobic
- 0 to low after 2hrs

Question 5

Intersections

Answer 5

• ATP/PC and Lactic (before 10sec)
• Aerobic and Lactic (before 1min